D. think of it like a current!
electron -> electron-> electron->
Grains mmsmsmsmamansnsnsss
Answer:
Option 1.
Explanation:
r-selected species may be defined as the species that has higher growth rate, shows less parental care and the rate of survival of the off spring is low as compared with k selected species.
Black widow spiders have the ability to produce 1000 offspring. Their chances of survival are extremely low and only few species of black widow spiders survive. Hence, black widow spider is r-selected species.
Thus, the correct answer is option (1).
A Respiration by animals CO2 is being added.
B trees burning same
C tree leaves removed
D oil added
Natural selection gets rid of those who are unfit of surviving and allows those who can survive to reproduce and live on
